#region Copyright

// Copyright © 2025, TeamDev. All rights reserved.
// 
// Redistribution and use in source and/or binary forms, with or without
// modification, must retain the above copyright notice and the following
// disclaimer.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#endregion

using DotNetBrowser.Browser;
using DotNetBrowser.Engine;
using DotNetBrowser.Navigation.Events;
using ReactiveUI;

namespace Mvvm.ViewModels;

public class MainWindowViewModel : ReactiveObject
{
    private readonly IEngine engine;

    public IBrowser Browser { get; }

    public string? Url
    {
        get => Browser.Url;
        set
        {
            if (!string.IsNullOrWhiteSpace(value))
            {
                Browser.Navigation.LoadUrl(value).Wait();
            }

            this.RaisePropertyChanged();
        }
    }

    public MainWindowViewModel()
    {
        EngineOptions engineOptions = new EngineOptions.Builder
            {
                RenderingMode = RenderingMode.HardwareAccelerated
            }
           .Build();

        engine = EngineFactory.Create(engineOptions);
        Browser = engine.CreateBrowser();

        Browser.Navigation.FrameLoadFinished += NavigationOnFrameLoadFinished;
        Url = "html5test.teamdev.com";
    }

    public void DisposeBrowser()
    {
        Browser?.Dispose();
        engine?.Dispose();
    }

    private void NavigationOnFrameLoadFinished(object? sender, FrameLoadFinishedEventArgs e)
    {
        if (e.Frame.IsMain)
        {
            //Navigation is finished, notify that the URL is possibly updated.
            this.RaisePropertyChanged(nameof(Url));
        }
    }
}
